Palettes / Colors / #EFDF66

#EFDF66 — Light Vivid Yellow

#EFDF66 is a yellow color we call Light Vivid Yellow, closest to the named color Khaki (#F0E68C). It belongs to the yellow family.

Color name

Closest CSS keyword: khaki (#F0E68C) — not an exact match. CSS khaki gives you #F0E68C, a different color; use #EFDF66 when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#EFDF66 is a warm yellow color associated with optimism, attention and cheer. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #6777EF; it also sits naturally between #EF9B67 and #BBEF67. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 94% · Green 87% · Blue 40%

Cyan 0% · Magenta 7% · Yellow 57% · Key 6%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #EFDF66

.text { color: #EFDF66; }
.background { background-color: #EFDF66; }
.border { border: 3px solid #EFDF66; }
.text-rgb { color: rgb(239, 223, 102); }
.text-hsl { color: hsl(53, 81%, 67%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EFDF66; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 223, 102, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EFDF66; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 223, 102, 0.8); }

HTML: <p style="color:#EFDF66">Text here</p> · <div style="background-color:#EFDF66">Div content here</div>

Shades of #EFDF66

Tints of #EFDF66

Tones of #EFDF66

Color harmonies

Complementary — #6777EF:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #EFDF66: #000000.

Semi-transparent (opacity) text on #EFDF66

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #EFDF66 looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #EFDF66 rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #EFDF65  ·  #EFDF67 →

Frequently asked questions

What color is #EFDF66?

#EFDF66 is Light Vivid Yellow, a yellow color (RGB 239, 223, 102). Its closest standard named color is Khaki.

What is the RGB and HSL of #EFDF66?

#EFDF66 is RGB 239, 223, 102 — HSL 53°, 81%, 67% — CMYK 0%, 7%, 57%, 6%.

What colors go with #EFDF66?

Its complement is #6777EF; analogous partners are #EF9B67 and #BBEF67. It also appears in 6+ palettes in our collection.

Can I use #EFDF66 for text?

Black text on #EFDF66 has a contrast ratio of 15.42:1 (passes WCAG AA); white text gives 1.36:1.